26. Two plane mirrors AB and CD are placed at right angles to one another. A ray of light PQ hits AB at Q making an angle of 45 degrees as shown in the figure . At what angle will this ray be reflected from the mirror BD ?
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45 degrees as in first angle of incidence is 45deg then reflection will be 90degree in respective to the incidence ray. Now the reflected ray is incident on BD with 45 deg then the angle of reflection will be 45 with respect to normal and also 45 degs with repect to mirror. Therefore the angle is 45•
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